Electrical device.



e. AQ HUBER.

ELECTRICAL DEVICE. APPUCAHON FILED Juv/18, |912.

Patented July 24, 1917,

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Specification of Letters Patent.

l,Pateiioted July .24, y1-91"?,

,Application filed July 18, 15312. `Seria1^No."f/`10,218.

"To all whom/Avit may concern Be it Aknown that 1l, Grns'rnv `Anoniem HUBER, a citizen oi'theiUnited` States, residing at the borough of Manhattan, in the county oi'NewjYorkan/d State of New York, have inventedcertain new` and uset'ul "lmprovements inllectrical Devices, of which the following is a specification, reference being lhad `therein tothe accompanying drawinff, y A

My invention relates toimprovements in electric bells,` buzzers and similar devices and has especialreference to a combination bell and buzzer.

According-to my invention the bell and buzzer are 'formed upon a single frame and are actuated bythe same magnet andeither can be operated from any yusual distance upon a three Wire system.

Referring tothe accompanying drawing it will be observed vided with three bindingposts 3ft-5 to 'Which are connected the-three wires of the system G, 7 andS respectively.` 9 indicates a suitable `battery "for ,supplying -the necessary current. `10 is an armature secured upon the `usual#spring 11 in,` any usual manner and provided with the hammer 12. v13 is a similar armaturevvithout any hammer secured upon the usual spring sucliias 11a These springs are mountedupon'the pivot le suitably secured to the frame 2 as shown. 15 is a suitable core of the frame uponvvhich is Wound coils of Wire such as 16 thusmagnetizing the frame of the bell When the current is on. So tar as concerns many aspects ot the invention, the body portion of the :frame may be of any form, but in accordance with one 'feature of the invention said frame has a circular body portion concen tric with the core as shown. In operation when the button 17 is pressed the current flows from one terminal 18 of the battery 9, through the Wire 7, the insulated terminal 4, Wire 19, to the insulated metallic bracket 2O which carries the contact point 21 against which the insulated spring contact 22 normally rests. From the point 22 the Wire 23 carries the current to the insulated ,50 metallic bracket 20 from which the curthrough the Wire 21 into the coil 1G back to the insulated binding post 5 through the connecting Wire 2l and from there to the other terminal 25 of the battery by the connecting` wire S.

lVhen the button 2G is pressed, the current passes that fthe frame 2 is pro-' rent 4iloivs from terminal 18 of the battery 9, through the line V(3, 'the ground binding post B and frame 2 of tlie'ibell, into the spring 11 which -is-normal-ly in contact ywith the connecting point of the metallic bracket 20 from which the current vpasses through the Wire 21', `coil 16, and connecting Wire 2i' to the line S and'terminal 25 of the battery 9.

Fromthis it Will be seen that Whenthe button 2G is pressed, the bell 27 Will be vrung by the hammer l12, `the buzzer ,also operating,fbut in a p factically unnoticeable and unobj ectionable manner, and that `.when the button17 is pressed, the buzzer only will be actuated. By this arrangement the struc ture of a `single vibrating bell maybe ein ployed and the only attachment necessary for the buzzer is the additional armatureand spring 13-11 together with `its bracket 20 andtheir connections` Itivill i'urtherbe observed that by this methodith'e three `Wire circuit 6-7-8 reduces the amount ofwviring necessary :and thus eliminates another item of expense in the installation yof separate bells andbuzzers.

lIt will be understood that changes may be made from the precisestructure shown and described, Withinethe soopeofcthe accompanying claims, Without departing romthe spirit oflthe invention and Without` sacriicing its chief advantages.

I claim:

`1. An electric alarm including in combination a plate of magnetizable metal, a core connected thereto and provided with a Winding, an insulated circuit branch from said Winding to one pole of a source of electric energy, two armatures actuated by said plate, tivo brackets, one for each oi said armatures insulated from said plate, an insulated circuit connection from said Winding to one of said brackets, an insulated circuit connection from the other of said brackets to the other pole of said source oi electric energy, a circuit connection from said magnetizable plate to said last mentioned pole of the source of electrical energy, an insulated electrical connection between said brackets and means for opening and closing said circuits.

2. An electric alarm including in combination a plate of magnetizable metal, a magnet core connected perpendicularly thereto and therebeneath, said plate forming a head and a cover for the magnet, tivo armatures coperating with said magnet head, plate, make and break mechanisms foreach oi' said armatures, respectively, comprising brackets mounted upon lbut insulated from said plate, a connection from the magnet winding to one of said brackets, an electrical connection from said last-mentioned bracket through the other make and break mechanism to one pole oi' ay battery, and a connection from the other terminal of the magnet winding to the other pole of said battery.

3. An electric alarm including in combination a plate of magnetizable metal, a magnet core connected perpendicularly thereto and therebeneath, said plate forming a head and a cover for the magnet and having an extension carrying a plurality of binding posts, two armatures coperating with said magnet head plate, make and break mechanisms for each of said armatures, respectively, comprising brackets mounted upon but insulated from said plate, a connection from the magnet winding to one of said brackets, an electrical connection from said last-mentioned bracket through the other make and break mechanism to one pole of a battery, and a connection from the other terminal of the magnet winding to the othery pole of said battery.

4. An electrical alarm including in combination a plate of magnetizable metal, a magnet core connected perpendicularly thereto and therebeneath, said plate forming a head and a cover for the magnet, two armatures coperating with said magnet head plate, and electrically connected thereto, make and lbreak mechanisms for each of said armatures, respectively, comprising brackets mounted upon but insulated from said plate,

40 a connection from the magnet winding to a connection from the magnet winding to f one of said brackets, an electrical connection from said last-mentioned bracket through the'other make and break mechanism to one pole of a battery, and a connection from the other terminal of the magnet winding to the other pole of Said batter, f

6. An electric alarm including in combiy nation a plate of magnetizable metal constituting a magnet head, a core ,connected thereto and a winding therefor, two armatures and make and break mechanisms cooperating with said magnetizable head, a bell, a bell clapper carried by one of said armatures, the other of said armatures acting as a buzzeigcircuit connections including three branches, with a switch in one branch for the bell and a switch in another branch fork the buzzer. y

In testimony whereof I alix my signature in presence of two witnesses.

GUSTAV ADOLPH HUBER.

Titnesses Louis ENDERLE, THOMAS A. HILL.

n Copies of this patent may be obtained for ve cents each, by addressing the Commissioner onf Patents.

Washington, D. C. 

